Working on a 2.6.22 kernel for a AU1100 board, I came across the
following inconsistency in register naming in

include/asm/mach-au1x00/au1000.h, which still exists in 2.6.27.4 (lines
1334-1389). There's no register SSI0_CONTROL, it should be named

SSI0_ENABLE, as it is for SSI1:
--8><--
#define SSI0_CONTROL 0xB1600100
#define SSI_CONTROL_CD (1<<1)
#define SSI_CONTROL_E (1<<0)
/* SSI1 */
[...]
#define SSI1_ENABLE 0xB1680100
[...]
#define SSI_ENABLE_CD (1<<1)
#define SSI_ENABLE_E (1<<0)
--><8--
As I'm not working on a current kernel repo I don't dare to provide a
patch. Would fixing this be desirable?

This seems to be a only top of iceberg as the SSI register bits are
all defined twice in the arch/mips/include/asm/mach-au1x00/au1000.h. I
wonder why gcc ignores macro redefinitions...
Patch is welcome but be sure not to break the users of those macros (if
there are any :-)...